Evaporating apparatus.



PATENTED FEB. 10, 1903."

No. 720.465. V

' O. M. NILSON.

EVAPORATINGAPPARATUS.

APPLICATION IIL'ED DEG.17, m1.

2 SHEETS-SHEET 1.

N0 MODEL.

q/vitneooeo n: NORRIS Pzrzns co. PHOTO LITHO wAswmoTow a c No 720,465.PATENTED FEB. 10, 1903.

0. M. NILSON.

EVAPORATING APPARATUS.

APPL IOATION FILED DEC. 11; 1901.

. 1 H0 MODEL. 2 SHEETSSHEET 2.

Simon/1 oz THE NORRIS PETERS c0. Puma-Luna, wpsnmanm u. c

UNITED STATES PATENT OFFICE.

OSCAR M. NILSON, OF MANSFIELD, LOUISIANA.

EVAPQRATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 720,465, dated February10, 1903. Application filed December 17, 1901. Serial No. 86,283. (Nomodel.)

To all whom it may concern:

Be it known that I, OSCAR M. NI soN, a citizen of the United States,residing at Mansfield, in the parish of De Soto and State of Louisiana,have invented certain new and useful Improvements in EvaporatingApparatus, of which the following is aspecification, reference being hadtherein to the accompanying drawings.

My invention relates to new and useful improvements in apparatus forboiling canejuice and reducing it to sugar density. It is moreespecially an improvement upon the apparatus shown and described inLetters Patent No. 698,733, granted to me on April 29, 1902.

The primary object is to provide a simple and inexpensive apparatushaving means whereby the maximum heating-surface is presented to thelight syrup made from the previously-superheated j nice and the samethereby quickly reduced to the desired density.

Another object is to provide a novel arrangement of tubes whereby adirect circulation of the juice or syrup is permitted between thereservoir and the clarifier or superheater used in connection with theapparatus.

A further object is to employ a series of defiectors within the hot-airflue, whereby the products of combustion are caused to circu late fromside to side during their outward progress.

With these and other objects in view the invention consists in the novelconstruction and combination of partshereinafter more fully describedand claimed, and illustrated in the accompanying drawings, showing thepreferred form of my invention, and in which Figure 1 is a verticalsection through the apparatus. Fig. 2 is an end elevation thereof,partly broken away. Fig. 3 is a plan view of the clarifier. Fig. 4 is anend view of a series of apparatus connected together; and Fig. 5-

is a section on line 00 00, Fig. 4.

Referring to the figures by numerals of reference, 1 is a brick or Dutchfurnace, from the rear of the top of which extends a preferablyrectangular metal drum 2, which opens into the furnace, as shown. Theupper end of this drum opens into a horizontally-extending flue 3,extending entirely under a clarifier at and having an outlet into asuitable chimney or stack 5. The fiue is preferably constructed of sheetmetal and integral with the clarifier, although the same may bedetachable, if desired.

The clarifier is substantially the same in construction as thatdisclosed in my application aforesaid. Strips 6 extend partly across thesame from opposite sides alternately, and a dam 7, arranged adjacent toone end of the clarifier, extends entirely thereacross. The strips 6maybe omitted and the pan used to superheat syrup.

That portion 8 of the bottom of the clarifier which lies between the dam7 and the adjacent end of the clarifier may, if desired, be sunken, asshown. Extending upward through the depressed portion 8 to points inhorizontal alinement with the bottom of the clarifier are vertical tubes9. These tubes extend down through the drum 2, and the lowerends'thereof are fitted within the top of a metallic reservoir 10,arranged in the furnace l at a point under the drum. This reservoirforms a portion of the rear wall of the furnace and has a suitablevalved outlet 11, whereby the contents thereof may be drawn off.

As shown in the drawings, the clarifier extends out-ward beyond thewalls of the drumZ. Opening into the bottom of the clarifier, atopposite sides thereof, are pipes 12, which extend along the outside ofthe drum and open at .their lower ends into the reservoir 10. Similarpipes of any desired number can also be arranged at the rear of theboiler.

Downwardly-inclined deflectors 13 are arranged upon oppositesides of thedrum 2 and extend inwardly alternately.

A glass 14, having suitable graduations, is connected at its ends to theclarifier 4 by means of short tubes 15, as shown. Bymeans of this glassthe density of the syrup may be readily determined.

Syrup is placed in the clarifier at in any desired manner, as by meansof a pump 16. It is there heated and partially evaporated by the heatpassing through the flue 3. It is guided back and forth by the strips 6and finally flows over or through the dam 7 into the depression 8. WVhenit rises to the tops of the tubes 9, it will flow thereinto and passdownward into the reservoir 10. The tubes or pipes 12 are also filledwith the syrup, as is obvious.

The hot products of combustion escaping through the drum 2 from thefurnace are deflected from side to side by the deflectors 13 and thesyrup within the reservoir and the tubes 9 is thoroughly heated. As thesyrup becomes lighter when heated, it will rise within the tubes 9 andbe displaced by syrup admitted through the cool pipes 12. In this mannera circulation of the syrup is obtained and the density is graduallyincreased. \Vhen the desired density has been secured, the syrup isremoved in a continuous stream or in charges through the outlet 11.

In Fig. 4: I have shown two of the apparatus connected, so as to permitthe juice or syrup to flow back and forth from one to the other. Inorder to secure this result, I employ, in addition to the pipes 12,transverse horizontal pipes 17, which connect the clarifiers andreservoirs,respectively. Diagonallyarranged pipes 18 connect theclarifier of each apparatus with the reservoir of the adjacentapparatus. These pipes, as well as pipes 17 and 12, are provided withsuitable valves 19, as shown. The valves in pipes 12 may, if desired, bedespensed with.

Having thus fully described my invention, what I therefore claim as new,and desire to secure by Letters Patent, is

1. In an evaporating apparatus the combination with aclarifier and aflue thereunder; of a furnace under said clarifier and flue, a reservoirtherein, a drum for conveying the products of combustion from thefurnace to the flue under the clarifier, and a normally heated and anormally cool pipe connecting said clarifier and reservoir.

2. In an evaporating apparatus the combination with a clarifier and aflue thereunder; of a furnace under the clarifier and flue, a reservoirtherein, a drum for conveying the products of combustion from thefurnace to the flue under the clarifier, a pipe connecting the reservoirand clarifier and adapted to be heated by the furnace, said pipe lyingin the path of the products of combustion, and a normally cool pipeconnecting the clarifier and reservoir.

3. In an evaporating apparatus the combination with a furnace; of areservoir therein,

a clarifier above the furnace and reservoir, a drum for conveying theproducts of combustion from the furnace to the clarifier whereby saidclarifier may be heated, a normally heated pipe in the path of theproducts of combustion and connecting the clarifier and reservoir and anormally cool pipe connecting said reservoir and clarifier.

4. In an evaporating apparatus the combination with a clarifier, a fluethereunder, and a drum connecting with the flue; of a syrupreservoir,means for heating the same, tubes extending through the drum andconnecting the reservoir and clarifier, deflectors in the drum, andtubes outside the drum connecting the reservoir and clarifier.

5. In an evaporating apparatus the combination with a clarifier, a finethereunder, and a drum connecting with the flue; of a furnace, areservoir forming a portion of one Wall of the furnace, tubes extendingthrough the drum and connecting the reservoir and clarifier, deflectorswithin the drum, and tubes outside the drum connecting the clarifier andreservoir.

6. In an evaporating apparatus the combination With a clarifier having adam therein and a depressed portion adjacent to the dam; of a reservoir,means for heating the same, tubes connecting the reservoir with thedepressed portion of the clarifier and extending to points therein inhorizontal alinement with the bottom of the clarifier, a second set oftubes connecting said clarifier and reservoir, one set of tubes beingadapted to be heated, whereby circulation of syrup in the apparatus maybe secured.

7. In an evaporating apparatus the combination with a receptacle forholding syrup and a flue thereunder; of a furnace, a reservoir therein,a drum for conveying the products of combustion from the furnace to theflue under the clarifier, and a normally heated and a normally cool pipeconnecting the reservoir and receptacle.

In testimony whereof I affix my signature in presence of two witnesses.

OSCAR M. NILSON.

Witnesses:

T. WATKINS SHERMAN, ALBERT GUILBAULT.

